-- https://github.com/lewis6991/gitsigns.nvim
local status, gitsigns = pcall(require, 'gitsigns')
if not status then
    vim.notify('没有找到 gitsigns')
    return
end

gitsigns.setup({
    -- 字母图标 A 增加，C修改，D 删除
    signs = {
        add = { hl = 'GitSignsAdd', text = 'A|', numhl = 'GitSignsAddNr', linehl = 'GitSignsAddLn' },
        change = { hl = 'GitSignsChange', text = 'C|', numhl = 'GitSignsChangeNr', linehl = 'GitSignsChangeLn' },
        delete = { hl = 'GitSignsDelete', text = 'D_', numhl = 'GitSignsDeleteNr', linehl = 'GitSignsDeleteLn' },
        topdelete = { hl = 'GitSignsDelete', text = 'D‾', numhl = 'GitSignsDeleteNr', linehl = 'GitSignsDeleteLn' },
        changedelete = { hl = 'GitSignsChange', text = 'D~', numhl = 'GitSignsChangeNr', linehl = 'GitSignsChangeLn' },
    },
    -- 显示图标
    signcolumn = true, -- Toggle with `:Gitsigns toggle_signs`
    -- 行数高亮
    numhl = false, -- Toggle with `:Gitsigns toggle_numhl`
    linehl = false, -- Toggle with `:Gitsigns toggle_linehl`
    word_diff = true, -- Toggle with `:Gitsigns toggle_word_diff`
    keymaps = require('keybindings').gitsigns,
    watch_gitdir = {
        interval = 1000,
        follow_files = true,
    },
    attach_to_untracked = true,
    current_line_blame = false, -- Toggle with `:Gitsigns toggle_current_line_blame`
    current_line_blame_opts = {
        virt_text = true,
        virt_text_pos = 'eol', -- 'eol' | 'overlay' | 'right_align'
        delay = 1000,
        ignore_whitespace = false,
    },
    current_line_blame_formatter_opts = {
        relative_time = false,
    },
    sign_priority = 6,
    update_debounce = 100,
    status_formatter = nil, -- Use default
    max_file_length = 40000,
    preview_config = {
        -- Options passed to nvim_open_win
        border = 'single',
        style = 'minimal',
        relative = 'cursor',
        row = 0,
        col = 1,
    },
    yadm = {
        enable = false,
    },
    on_attach = require('keybindings').gitsigns_on_attach,
})

function t(bufnr)
    local gs = package.loaded.gitsigns

    local function map(mode, l, r, opts)
        opts = opts or {}
        opts.buffer = bufnr
        vim.keymap.set(mode, l, r, opts)
    end

    -- Navigation
    map('n', '<leader>gj', function()
        if vim.wo.diff then
            return ']c'
        end
        vim.schedule(function()
            gs.next_hunk()
        end)
        return '<Ignore>'
    end, { expr = true })

    map('n', '<leader>gk', function()
        if vim.wo.diff then
            return '[c'
        end
        vim.schedule(function()
            gs.prev_hunk()
        end)
        return '<Ignore>'
    end, { expr = true })

    map({ 'n', 'v' }, '<leader>gs', ':Gitsigns stage_hunk<CR>')
    map('n', '<leader>gS', gs.stage_buffer)
    map('n', '<leader>gu', gs.undo_stage_hunk)
    map({ 'n', 'v' }, '<leader>gr', ':Gitsigns reset_hunk<CR>')
    map('n', '<leader>gR', gs.reset_buffer)
    map('n', '<leader>gp', gs.preview_hunk)
    map('n', '<leader>gb', function()
        gs.blame_line({ full = true })
    end)
    map('n', '<leader>gd', gs.diffthis)
    map('n', '<leader>gD', function()
        gs.diffthis('~')
    end)
    -- toggle
    map('n', '<leader>gtd', gs.toggle_deleted)
    map('n', '<leader>gtb', gs.toggle_current_line_blame)
    -- Text object
    map({ 'o', 'x' }, 'ig', ':<C-U>Gitsigns select_hunk<CR>')
end
